Fellow car audio enthusiasts....I recently upgraded out of the stock Bose system in my Nissan Maxima and replaced the stock speakers up front with JL Audio C5 series 6.5" coaxials, and replaced the stock rear speakers with JL Audio C2 coaxials. I do have a sub, but my question here is about the bass, or lack thereof, with these two pair of speakers. Now coming from a freaking Bose system that had pretty slammin' bass considering it was just stock front and rear speakers, I assumed it was a given that the new JL's, even without the sub, would exceed the bass I was getting with the Bose speakers. Yet it's not even close. When I defeat the crossovers and run both pair of speakers full range, there is practically no bass. If I didn't have the sub, I'd be collosally disappointed. And perhaps as telling is that when I move the crossover from defeated entirely up to 20,30,40,50,60,70,80Hz, there is practically no difference whatsoever in bass output. Now I've heard of cancellation before, but something has to be way off. Any ideas, please!?!?!?!?!?!?!?!